The way I see it myself it is an implication to make the most out of your life as in the end, we all going to reach the same ending point. No need to fear for that time. It is only natural. Do what you can now and make sure you leave no regrets behind. As long as you have lead a satisfying Life for you and your loved ones, that's what matters the most !!!!
More like it might imply to those who fall behind in life are already making themselves dead when they could’ve avoided it in the first place or they had other more personal problems or downright don’t get enough they need. Then they’re like a good as dead by now.